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# Systems Test Engineer

- **Company:** Lunar Energy
- **Location:** San Francisco, CA, United States
- **Salary:** $120,000.0 - $170,000.0
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Microsoft Windows, Amazon Web Services, Data Analysis, Macintosh Computers, Business Logic, Continuous Integration, Software Debugging, Linux, Embedded Software, Ethernet, Firmware, Python (Programming Language), Regression Testing, Systems Integration, Wi-Fi Technology, Building Management System (BMS), Grafana, Jenkins
- **Published:** May 15, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=55e6ee67ad629a09

## About the Role

Do you have experience in Embedded systems?, * Windows, Mac and Linux platform experience

 * Strong skills in Python related to scripts, control of devices etc.
 * Good understanding of C programming language in the interests of understanding device functionality.
 * At least a minimum understanding of CI/CD pipeline and data analysis tools (Jenkins, AWS, Grafana)
 * Ability to make things work, and a drive to break them
 * Demonstrated excellence in debugging complicated system-level behavior at the crossroads of electrical engineering and firmware
 * Outstanding written and verbal communication and the ability to smoothly work cross-functionally
 * A strong sense of ownership and responsibility towards delivering a great product.
 * Fluent in scripting/automation using Python
 * Experience with hardware in the loop testing
 * Able to read electrical schematics and device/component datasheets.
 * Experience with BMS, batteries, and power electronics desired
 * Experience with CAN, Wifi, Ethernet communications desired
 * BS in CS, EE, or equivalent

## Description

This role is on the front line of system integration between mechanical parts, electrical boards, low-level embedded firmware, and higher-level application logic. This is a highly technical role requiring experience with integrated hardware and embedded software. You will identify and solve cross-functional integration problems, and put in place hardware and software to perform automated system-level regression testing.

Lunar Energy was founded to transition homes to 100% clean energy-making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We're a fast-growing, global company building the world's best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.

On a given day at Lunar, you'll likely…

 * Participate in designing new features, develop test cases.
 * Put together new hardware and firmware for the first time, instrument setups and perform manual tests and capture results.
 * Solve integration problems and create automated system-level regression tests.
 * Review firmware code and highlight limitations and add test cases and propose fixes.
 * Work side by side with your counterparts in EE, ME, FW, and Systems to release high-quality features with extensive regression testing.
 * Ensure the system meets its requirements and this behavior is robust across all corner cases
 * Work with team in root causing issues and perform tests to exercise limits
 * Define and implement hardware in the loop testing
 * Evaluate new tools and equipments to ease and improve testing.


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